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1 /* | 1 /* |
2 * Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved. | 2 * Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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39 | 39 |
40 class GraphicsContext; | 40 class GraphicsContext; |
41 class IntRect; | 41 class IntRect; |
42 class PlatformGestureEvent; | 42 class PlatformGestureEvent; |
43 class PlatformMouseEvent; | 43 class PlatformMouseEvent; |
44 class ScrollAnimator; | 44 class ScrollAnimator; |
45 class ScrollableArea; | 45 class ScrollableArea; |
46 class ScrollbarTheme; | 46 class ScrollbarTheme; |
47 | 47 |
48 class PLATFORM_EXPORT Scrollbar : public Widget, public ScrollbarThemeClient { | 48 class PLATFORM_EXPORT Scrollbar : public Widget, public ScrollbarThemeClient { |
49 | |
50 public: | 49 public: |
51 static PassRefPtrWillBeRawPtr<Scrollbar> create(ScrollableArea*, ScrollbarOr ientation, ScrollbarControlSize); | 50 static PassRefPtrWillBeRawPtr<Scrollbar> create(ScrollableArea*, ScrollbarOr ientation, ScrollbarControlSize); |
52 | 51 |
53 virtual ~Scrollbar(); | 52 virtual ~Scrollbar(); |
54 | 53 |
55 // ScrollbarThemeClient implementation. | 54 // ScrollbarThemeClient implementation. |
56 virtual int x() const override { return Widget::x(); } | 55 virtual int x() const override { return Widget::x(); } |
57 virtual int y() const override { return Widget::y(); } | 56 virtual int y() const override { return Widget::y(); } |
58 virtual int width() const override { return Widget::width(); } | 57 virtual int width() const override { return Widget::width(); } |
59 virtual int height() const override { return Widget::height(); } | 58 virtual int height() const override { return Widget::height(); } |
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146 | 145 |
147 virtual float elasticOverscroll() const override { return m_elasticOverscrol l; } | 146 virtual float elasticOverscroll() const override { return m_elasticOverscrol l; } |
148 virtual void setElasticOverscroll(float elasticOverscroll) override { m_elas ticOverscroll = elasticOverscroll; } | 147 virtual void setElasticOverscroll(float elasticOverscroll) override { m_elas ticOverscroll = elasticOverscroll; } |
149 | 148 |
150 bool overlapsResizer() const { return m_overlapsResizer; } | 149 bool overlapsResizer() const { return m_overlapsResizer; } |
151 void setOverlapsResizer(bool overlapsResizer) { m_overlapsResizer = overlaps Resizer; } | 150 void setOverlapsResizer(bool overlapsResizer) { m_overlapsResizer = overlaps Resizer; } |
152 | 151 |
153 virtual DisplayItemClient displayItemClient() const override { return toDisp layItemClient(this); } | 152 virtual DisplayItemClient displayItemClient() const override { return toDisp layItemClient(this); } |
154 virtual String debugName() const override { return m_orientation == Horizont alScrollbar ? "HorizontalScrollbar" : "VerticalScrollbar"; } | 153 virtual String debugName() const override { return m_orientation == Horizont alScrollbar ? "HorizontalScrollbar" : "VerticalScrollbar"; } |
155 | 154 |
155 EAGERLY_FINALIZE(); | |
haraken
2015/06/29 15:20:22
Would you elaborate on why this needs to be eagerl
sof
2015/06/29 15:59:42
Unregistration from the ScrollbarTheme 'manager',
haraken
2015/06/30 10:30:35
ok, let's add some comment anyway :)
sof
2015/06/30 11:34:09
Done.
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156 #if ENABLE(OILPAN) | |
157 DECLARE_EAGER_FINALIZATION_OPERATOR_NEW(); | |
haraken
2015/06/29 15:20:22
I'd prefer using pre-finalizers though. It wouldn'
sof
2015/06/29 15:59:42
I don't understand that argument about risk; could
haraken
2015/06/30 10:30:35
A pre-finalizer is allowed to touch any other on-h
sof
2015/06/30 11:34:08
Thanks for spelling those out; some comments..
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158 #endif | |
159 DECLARE_VIRTUAL_TRACE(); | |
160 | |
156 protected: | 161 protected: |
157 Scrollbar(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize, Scrol lbarTheme* = 0); | 162 Scrollbar(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize, Scrol lbarTheme* = 0); |
158 | 163 |
159 void updateThumb(); | 164 void updateThumb(); |
160 virtual void updateThumbPosition(); | 165 virtual void updateThumbPosition(); |
161 virtual void updateThumbProportion(); | 166 virtual void updateThumbProportion(); |
162 | 167 |
163 void autoscrollTimerFired(Timer<Scrollbar>*); | 168 void autoscrollTimerFired(Timer<Scrollbar>*); |
164 void startTimerIfNeeded(double delay); | 169 void startTimerIfNeeded(double delay); |
165 void stopTimerIfNeeded(); | 170 void stopTimerIfNeeded(); |
166 void autoscrollPressedPart(double delay); | 171 void autoscrollPressedPart(double delay); |
167 ScrollDirectionPhysical pressedPartScrollDirectionPhysical(); | 172 ScrollDirectionPhysical pressedPartScrollDirectionPhysical(); |
168 ScrollGranularity pressedPartScrollGranularity(); | 173 ScrollGranularity pressedPartScrollGranularity(); |
169 | 174 |
170 ScrollableArea* m_scrollableArea; | 175 RawPtrWillBeMember<ScrollableArea> m_scrollableArea; |
171 ScrollbarOrientation m_orientation; | 176 ScrollbarOrientation m_orientation; |
172 ScrollbarControlSize m_controlSize; | 177 ScrollbarControlSize m_controlSize; |
173 ScrollbarTheme* m_theme; | 178 ScrollbarTheme* m_theme; |
haraken
2015/06/29 15:20:22
This raw pointer looks safe because the ScrollbarT
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174 | 179 |
175 #if ENABLE(OILPAN) | |
176 // To simplify Oilpan finalization, keep a copy of the ScrollableArea's | |
177 // scroll animator. Scrollbar is responsible for notifying the animator | |
178 // when it is destructed. | |
179 RefPtr<ScrollAnimator> m_animator; | |
180 #endif | |
181 | |
182 int m_visibleSize; | 180 int m_visibleSize; |
183 int m_totalSize; | 181 int m_totalSize; |
184 float m_currentPos; | 182 float m_currentPos; |
185 float m_dragOrigin; | 183 float m_dragOrigin; |
186 | 184 |
187 ScrollbarPart m_hoveredPart; | 185 ScrollbarPart m_hoveredPart; |
188 ScrollbarPart m_pressedPart; | 186 ScrollbarPart m_pressedPart; |
189 int m_pressedPos; | 187 int m_pressedPos; |
190 float m_scrollPos; | 188 float m_scrollPos; |
191 bool m_draggingDocument; | 189 bool m_draggingDocument; |
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206 virtual bool isScrollbar() const override { return true; } | 204 virtual bool isScrollbar() const override { return true; } |
207 | 205 |
208 float scrollableAreaCurrentPos() const; | 206 float scrollableAreaCurrentPos() const; |
209 }; | 207 }; |
210 | 208 |
211 DEFINE_TYPE_CASTS(Scrollbar, Widget, widget, widget->isScrollbar(), widget.isScr ollbar()); | 209 DEFINE_TYPE_CASTS(Scrollbar, Widget, widget, widget->isScrollbar(), widget.isScr ollbar()); |
212 | 210 |
213 } // namespace blink | 211 } // namespace blink |
214 | 212 |
215 #endif // Scrollbar_h | 213 #endif // Scrollbar_h |
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